Question 83612
8z+2=2(z-5)-z

Adding z to both the sides,

8z + 2 + z = 2z - 10

adding - 2z to both the sides,

8z + 2 + z - 2z = - 10

7z + 2 = - 10

adding -2 to both the sides,

7z = - 10 -2

7z = - 12

z = - 12/7